<template>
  <div class="tab-bar-item" @click="itemClick">
      <div v-if="!isActive"><slot name="item-icon"></slot></div>
      <div v-else> <slot  name="item-icon-active"></slot></div>
      <div :style="activeStyle">
          <slot name="item-text"></slot>
      </div>
</div>
</template>

<script>
export default {
    name:'TabBarItem',
    props:{
        path: String,
        activeColor:{
           type:String,
           default:'red'
        }
    },
    data(){
        return{
            //  isActive:false
        }
    },
    computed:{
        isActive(){
            // home 
            // indexof  == -1  四个里面没找到这个home
            // indexof  !== -1  四个里面没找到这个home就是找到了  isActive=true
            return this.$route.path.indexOf(this.path) !== -1
        },
        activeStyle(){
            return this.isActive ?{color:this.activeColor} :{}
        }
    },
    methods:{
        itemClick(){
            this.$router.replace(this.path)
            console.log("itemClick")
        }
    }
}
</script>

<style scoped>
.tab-bar-item{
  flex:1;
  text-align: center;
  height: 49px;
  font-size: 14px;
}
.tab-bar-item img{
  width: 24px;
  height: 24px;
  margin-top: 3px;
  vertical-align: middle;
   margin-bottom: 2px;
}

</style>